/*
 * Copyright 2012 XueSong Guo.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package cn.webwheel.setters;

public class BooleanSetter extends AbstractSetter<Boolean> {

    public BooleanSetter(Boolean def) {
        this.def = def;
    }

    static boolean toBool(String s) {
        s = s.trim().toLowerCase();
        return !s.equals("null") && !s.equals("false") && !s.equals("off") && !s.equals("0") && !s.equals("no");
    }

    @Override
    protected Boolean get(Object param) {
        if (param instanceof String[]) {
            return toBool(((String[]) param)[0]);
        }
        return null;
    }
}
